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The effect of concurrent infections with pasteurella multocida and ascaridia galli on free range chickens

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dc.creator Dahl, C.
dc.creator Permin, A
dc.creator Christensen, J.P
dc.creator Bisgaard, M
dc.creator Muhairwa, A.P
dc.creator Petersen, K.M.D
dc.creator Poulsen, J.S.D
dc.creator Jensen, A.L
dc.date 2022-05-07T11:06:43Z
dc.date 2022-05-07T11:06:43Z
dc.date 2002-01-26
dc.date.accessioned 2022-10-25T08:53:44Z
dc.date.available 2022-10-25T08:53:44Z
dc.identifier https://www.suaire.sua.ac.tz/handle/123456789/4089
dc.identifier.uri http://hdl.handle.net/123456789/94086
dc.description Pasteurella multocida and Ascaridia galli are observed with high prevalences in free range chickens in Denmark, but the impact is unknown. A study was carried out to examine the interaction between A. galli and P. multocida in chickens and the impact on production. Five groups, each with 20 18-week-old Lohmann Brown chickens were infected. Group 1 was orally infected with 1000 50 embryonated A. galli eggs. Group 2 received 10 4 cfu P. multocida intratracheally. Group 3 was infected with A. galli and subsequently with P. multocida. Group 4 was infected with P. multocida followed by A. galli. Group 5 was the control. The study ran for 11 weeks where clinical manifestations, weight gain and egg production were recorded. Excretion of P. multocida was determined on individual basis and blood smears were made for differential counts. At the end of the study pathological lesions and the number of adult worms, larvae and eggs in the faeces were recorded. The birds were more severely affected when infected with both pathogens compared to single infections with A. galli or P. multocida, respectively. A lower weight gain and egg production was observed with dual infections. A. galli infection followed by a secondary P. multocida infection resulted in more birds with pathological lesions and continued P. multocida excretion. In conclusion a negative interaction between A. galli and P. multocida was observed and it is postulated that free range chickens are at higher risk of being subjected to outbreaks of fowl cholera when they are infected with A. galli. # 2002 Elsevier Science B.V. All rights reserved.
dc.format application/pdf
dc.language en
dc.publisher Elsevier
dc.subject Chicken
dc.subject Epidemiology
dc.subject Pasteurella multocida
dc.subject Ascaridia galli
dc.subject Concurrent infection
dc.subject Interactions
dc.title The effect of concurrent infections with pasteurella multocida and ascaridia galli on free range chickens
dc.type Article


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